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Eagerly evaluate built-in operators for OptimizationLevel::Simple.

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This commit is contained in:
Stephen Chung
2020-10-05 10:27:31 +08:00
parent b91a073596
commit 0d0affd5e9
11 changed files with 182 additions and 104 deletions
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10
doc/src/engine/optimize/reoptimize.md
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@@ -16,11 +16,11 @@ The final, optimized [`AST`] is then used for evaluations.
// Compile master script to AST
let master_ast = engine.compile(
r"
if SCENARIO_1 {
if SCENARIO == 1 {
do_work();
} else if SCENARIO_2 {
} else if SCENARIO == 2 {
do_something();
} else if SCENARIO_3 {
} else if SCENARIO == 3 {
do_something_else();
} else {
do_nothing();
@@ -29,9 +29,7 @@ r"
// Create a new 'Scope' - put constants in it to aid optimization
let mut scope = Scope::new();
scope.push_constant("SCENARIO_1", true);
scope.push_constant("SCENARIO_2", false);
scope.push_constant("SCENARIO_3", false);
scope.push_constant("SCENARIO", 1_i64);
// Re-optimize the AST
let new_ast = engine.optimize_ast(&scope, master_ast.clone(), OptimizationLevel::Simple);